It is also worth mentioning that Techstars, besides 500 startups, is also a good program. Don't kid yourself though: they are all as picky (if not more) as YC. And as rmorrison said[1]: If you think you need YC to succeed, then you won't (and shouldn't) be accepted
'If you think you need YC to succeed, then you won't (and shouldn't) be accepted'. This is very well put.
I think to improve the chances of successfully creating something, keeping these in mind may help:
1. You should not believe that your circumstances are different even when it really is. Otherwise it becomes an excuse while the converse will help you push the limits.
2. You try to create something not because you want to be well-known or rich but rather you want to improve something (for yourself, etc.) or you believe there is no other better way to spend you time. You'll be less disappointed and more driven.
[1]http://blog.rmorrison.org/advice-for-yc-applicants-on-the-fe...